Ingredients
Scale
- 4 large onions, thinly sliced
- 4 tablespoons unsalted butter (57 g)
- 1 tablespoon olive oil (15 ml)
- 1 teaspoon salt
- 1 teaspoon sugar
- 8 cups beef broth (1.9 liters)
- 1/2 cup dry white wine (120 ml)
- 1 tablespoon fresh thyme leaves
- 1 bay leaf
- 1 French baguette, sliced
- 2 cups shredded Gruyère cheese (200 g)
- 1/2 cup shredded Parmesan cheese (50 g)
Instructions
- In a large pot, melt butter and olive oil over medium heat. Add the onions, salt, and sugar. Cook, stirring frequently, until onions are caramelized, about 20 minutes.
- Stir in the beef broth, white wine, thyme, and bay leaf. Bring to a simmer and cook for another 10 minutes. Remove bay leaf.
- Meanwhile, preheat the oven to 400°F (200°C). Place baguette slices on a baking sheet and sprinkle with Parmesan and half of the Gruyère cheese. Bake until golden and crispy, about 10 minutes.
- Serve the soup in bowls topped with the cheesy croutons and sprinkle remaining Gruyère cheese on top. Broil for 2-3 minutes until the cheese is bubbly.
Notes
- For a richer flavor, use homemade beef broth.
- Add a splash of sherry for an extra depth of flavor.
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Category: Dinner
- Method: Oven
- Cuisine: American
- Diet: Low Fat
Nutrition
- Serving Size: 1 serving
- Calories: 350
- Sodium: 420 mg
- Fat: 12 g
- Saturated Fat: 3 g
- Unsaturated Fat: 9 g
- Trans Fat: 0 g
- Carbohydrates: 45 g
- Fiber: 5 g
- Protein: 18 g
- Cholesterol: 65 mg
Keywords: easy french onion soup recipe, cheesy croutons, comfort food